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# Hey could someone help me I have tried but dont exactly understand how to do this problem. Urgent

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Suppose P, Q, and R are points in the plane such that PQ = 1.8 PR = 8.2 and angle PQR = 90 degrees. What is the perimeter of angle PQR?

Guest Nov 11, 2017
edited by Guest  Nov 11, 2017

#1
+145
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Use Pythagoras if its 90 degrees

formula = a^2 + b^2 = c^2

not sure about whether 8.2 is the longest side but this is what you do if it is

8.2^2 - 1.8^2 = 64

then you squareroot 64 which is 8

now you can add them all together 8+8.2=1.8 =18

YEEEEEET  Nov 11, 2017
Sort:

#1
+145
0

Use Pythagoras if its 90 degrees

formula = a^2 + b^2 = c^2

not sure about whether 8.2 is the longest side but this is what you do if it is

8.2^2 - 1.8^2 = 64

then you squareroot 64 which is 8

now you can add them all together 8+8.2=1.8 =18

YEEEEEET  Nov 11, 2017
#2
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thxthere is a part b

Guest Nov 11, 2017
#3
+1870
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What would the part b be?

TheXSquaredFactor  Nov 12, 2017

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